2821521272 has 16 divisors (see below), whose sum is σ = 5419386000. Its totient is φ = 1376351680.

The previous prime is 2821521257. The next prime is 2821521293. The reversal of 2821521272 is 2721251282.

It is a super-3 number, since 3×2821521272³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4300772 + ... + 4301427.

It is an arithmetic number, because the mean of its divisors is an integer number (338711625).

Almost surely, 2^2821521272 is an apocalyptic number.

It is an amenable number.

2821521272 is a deficient number, since it is larger than the sum of its proper divisors (2597864728).

2821521272 is a wasteful number, since it uses less digits than its factorization.

2821521272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8602246 (or 8602242 counting only the distinct ones).

The product of its digits is 8960, while the sum is 32.

The square root of 2821521272 is about 53117.9938627204. The cubic root of 2821521272 is about 1413.0616489069.

The spelling of 2821521272 in words is "two billion, eight hundred twenty-one million, five hundred twenty-one thousand, two hundred seventy-two".